Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21198 (1994 PX7)
Classification: Main-belt Asteroid          SPK-ID: 2021198
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1023733694830786 3.5999e-08  
a 2.779572284494559 1.4937e-08 au
q 2.495018104009072 1.0614e-07 au
i 1.87009091350187 3.7315e-06 deg
node 295.4824346292635 0.00011613 deg
peri 45.09186126988872 0.00011767 deg
M 278.9796046508254 2.0466e-05 deg
tp 2459777.440583845436
(2022-Jul-16.94058385)
9.704e-05 TDB
period 1692.643063432718
4.63
1.3644e-05
3.736e-08
d
yr
n .2126851240981144 1.7144e-09 deg/d
Q 3.064126464980045 1.6466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      10724 days (29.36 yr)  
   first obs. used      1992-02-28  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49991  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:58:30  

Additional Information
 Earth MOID = 1.48597 au 
 Jupiter MOID = 2.28062 au 
 T_jup = 3.325 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.10   n/a MPO636382  

21198 (1994 PX7)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PX7 = 1999 TZ122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-17 02:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin